org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators
Class POCast
java.lang.Object
org.apache.pig.impl.plan.Operator<PhyPlanVisitor>
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.ExpressionOperator
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POCast
- All Implemented Interfaces:
- Serializable, Cloneable, Comparable<Operator>, Illustrable
public class POCast
- extends ExpressionOperator
This is just a cast that converts DataByteArray into either String or
Integer. Just added it for testing the POUnion. Need the full operator
implementation.
- See Also:
- Serialized Form
Fields inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator |
alias, dummyBag, dummyBool, dummyDBA, dummyDouble, dummyFloat, dummyInt, dummyLong, dummyMap, dummyString, dummyTuple, illustrator, input, inputAttached, inputs, lineageTracer, outputs, parentPlan, pigLogger, reporter, requestedParallelism, res, resultType |
Fields inherited from class org.apache.pig.impl.plan.Operator |
mKey |
Methods inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.ExpressionOperator |
accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, accumChild, containUDF, setIllustrator, supportsMultipleOutputs |
Methods inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator |
attachInput, cloneHelper, detachInput, getAlias, getAliasString, getDummy, getIllustrator, getInputs, getLogger, getNext, getPigLogger, getRequestedParallelism, getResultType, isAccumStarted, isAccumulative, isBlocking, isInputAttached, processInput, reset, setAccumEnd, setAccumStart, setAccumulative, setAlias, setInputs, setParentPlan, setPigLogger, setReporter, setRequestedParallelism, setResultType |
POCast
public POCast(OperatorKey k)
POCast
public POCast(OperatorKey k,
int rp)
setFuncSpec
public void setFuncSpec(FuncSpec lf)
throws IOException
- Throws:
IOException
visit
public void visit(PhyPlanVisitor v)
throws VisitorException
- Description copied from class:
Operator
- Visit this node with the provided visitor. This should only be called by
the visitor class itself, never directly.
- Specified by:
visit
in class ExpressionOperator
- Parameters:
v
- Visitor to visit with.
- Throws:
VisitorException
- if the visitor has a problem.
name
public String name()
- Specified by:
name
in class Operator<PhyPlanVisitor>
supportsMultipleInputs
public boolean supportsMultipleInputs()
- Description copied from class:
Operator
- Indicates whether this operator supports multiple inputs.
- Specified by:
supportsMultipleInputs
in class Operator<PhyPlanVisitor>
- Returns:
- true if it does, otherwise false.
getNext
public Result getNext(Boolean b)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(Integer i)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(Long l)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(Double d)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(Float f)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(String str)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(Tuple t)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(DataBag bag)
throws ExecException
- Overrides:
getNext
in class ExpressionOperator
- Throws:
ExecException
getNext
public Result getNext(Map m)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNext
public Result getNext(DataByteArray dba)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
clone
public POCast clone()
throws CloneNotSupportedException
- Description copied from class:
ExpressionOperator
- Make a deep copy of this operator. This is declared here to make it
possible to call clone on ExpressionOperators.
- Overrides:
clone
in class ExpressionOperator
- Throws:
CloneNotSupportedException
- See Also:
Do not use the clone method directly. Operators are cloned when logical plans
are cloned using {@link LogicalPlanCloner}
getChildExpressions
public List<ExpressionOperator> getChildExpressions()
- Get child expression of this expression
- Specified by:
getChildExpressions
in class ExpressionOperator
setFieldSchema
public void setFieldSchema(ResourceSchema.ResourceFieldSchema s)
getFuncSpec
public FuncSpec getFuncSpec()
illustratorMarkup
public Tuple illustratorMarkup(Object in,
Object out,
int eqClassIndex)
- Description copied from interface:
Illustrable
- input tuple mark up to be illustrate-able
- Parameters:
in
- input tupleout
- output tuple before wrapped in ExampleTupleeqClassIndex
- index into equivalence classes in illustrator
- Returns:
- tuple
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